Search Results for: hyperplasia

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…dles of collagen in vertical streaks, the uneven psoriasiform hyperplasia, and the compact orthokeratosis are signs of lichen simplex chronicus. This still-active lesion of nummular dermatitis has been rubbed, with force and for a long time. 10.2.4A:…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Junctional Activity and Active Junctional Nevus?

…ctive junctional nevus, lentigo maligna, atypical melanocytic hyperplasia, mild, moderate, and severe dysplasia, and pagetoid melanocytic proliferation are employed consistently as evasions from a diagnosis of melanoma in situ. None of those terms ha…

Dermatology Practical & Conceptual

The so-called dysplastic nevus is not dysplastic at all

…splastic nevi] fit nicely into the schema of progression from hyperplasia to dysplasia to neoplasia that is accepted in many epithelial tumor systems, both experimental and human” [4]. As one examines the literature, there is really no evidence…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Tricho-, pilo-, folliculo- ?

…bulb. In short, tricholemmoma is not a benign neoplasm, but a hyperplasia. “Tricho-” is applied correctly in the name trichotillomania, in which hair shafts are twisted to and fro until they break, and it also is used properly in the term…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Figurate Erythemas?

…mounds of parakeratosis, foci of spongiosis, slight epidermal hyperplasia, and a superficial perivascular infiltrate of lymphocytes associated with a few extravasated erythrocytes in an edematous papillary dermis. Those findings histopathologic are i…

Histologic Diagnosis of Inflammatory Skin Diseases

Pattern Analysis in Historical Perspective

…perficial perivascular dermatitis + spongiosis + psoriasiform hyperplasia = spongiotic psoriasiform dermatitis (allergic contact or nummular dermatitis, fully developed). Figure 5.4 Contents of Histologic Diagnosis of Inflammatory Skin Diseases: A Me…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Endothelial Swelling?

…erans is manifested by endothelial cell swelling, endothelial hyperplasia and expansion of vessel walls by edema and a lymphohistiocytic infiltrate with luminal attenuation.” Barnhill RL. The treponemal and rickettsial diseases. In: Barnhill RL…